Mayor Bloomberg and City Council Speaker Chris Quinn are no longer pretending: They want Madison Square Garden gone, so they can rebuild Penn Station. But they don’t have the guts to evict the arena the legal way — eminent domain.

“Madison Square Garden will have to move,” Quinn huffed, after the council recently voted for a permit limited to 10 years. The new clarity about ousting the Garden is a step up. For a time, the Bloomberg folks claimed they were OK with fixing up the transit hub and leaving the arena where it is. Now they’re at least being honest about wanting it to move.

But revoking the Garden’s permit in 2023 is still sneaky. If Bloomberg, Quinn & Co. really seek to give MSG the boot, they should invoke eminent domain.

“There are public purposes,” like transit and schools, that make it necessary to evict property owners, Bloomberg said in May. He cited tax policies, permitting and even eminent domain for that, but ruled out the third option for the Garden.

We know why: Resorting to eminent domain would make clear this is all about taking private property from its owner. That in turn would likely set off a political firestorm that wouldn’t reflect well on our political class — and might even backfire.

Well, too bad. Abusing a permitting process to squeeze the Garden will only scare off other businesses. Besides, New Yorkers deserve the debate. If our pols want MSG out, let them use the proper tool and make the proper arguments.